ScriptDoc 1.0 available
ScriptDoc is a tool that extracts documentation from JavaScript files and packages it into XML files that can be consumed by documentation building tools such as Sandcastle. The 1.0 version is now able to extract documentation from doc comments as well as from the structure of the code itself. It generates a documentation file that uses the same format as C# doc comment files and a reflection file that describes the structure of the object model and that follows the same schema that Sandcastle is using.
It is available under a Microsoft Permissive License on Codeplex:
http://www.codeplex.com/scriptdoc